# The Angle Between Two Regression Lines Is 90 Then R = 0, Where R Is the Correlation Coefficient. (True / False)

The above-given statement is true.

The angle between the two regression lines is 90° and the angle between the regression line is given by

$$tan \theta = \frac{1 – r^{2}}{r} \frac{\sigma _{x}\sigma _{y}}{(\sigma _{x})^{2} + (\sigma _{y})^{2}}$$

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